diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
index e1da030..9b687ec 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
@@ -15,8 +15,9 @@
  */
 #define LOG_TAG "DefaultVehicleHal_v2_0"
 
-#include <android/log.h>
 #include <android-base/macros.h>
+#include <android/log.h>
+#include <sys/system_properties.h>
 
 #include "EmulatedVehicleHal.h"
 #include "JsonFakeValueGenerator.h"
@@ -203,8 +204,16 @@
     }
 
     getEmulatorOrDie()->doSetValueFromClient(propValue);
-    doHalEvent(getValuePool()->obtain(propValue));
 
+    if (mInEmulator && propValue.prop == toInt(VehicleProperty::DISPLAY_BRIGHTNESS)) {
+        // Emulator does not support remote brightness control, b/139959479
+        // do not send it down so that it does not bring unnecessary property change event
+        // return other error code, such NOT_AVAILABLE, causes Emulator to be freezing
+        // TODO: return StatusCode::NOT_AVAILABLE once the above issue is fixed
+        return StatusCode::OK;
+    }
+
+    doHalEvent(getValuePool()->obtain(propValue));
     return StatusCode::OK;
 }
 
@@ -219,6 +228,17 @@
     return false;
 }
 
+// determine if it's running inside Android Emulator
+static bool isInEmulator() {
+    char propValue[PROP_VALUE_MAX];
+    bool isEmulator = (__system_property_get("ro.kernel.qemu", propValue) != 0);
+    if (!isEmulator) {
+        isEmulator = (__system_property_get("ro.hardware", propValue) != 0) &&
+                     (!strcmp(propValue, "ranchu") || !strcmp(propValue, "goldfish"));
+    }
+    return isEmulator;
+}
+
 // Parse supported properties list and generate vector of property values to hold current values.
 void EmulatedVehicleHal::onCreate() {
     static constexpr bool shouldUpdateStatus = true;
@@ -269,6 +289,8 @@
     }
     initObd2LiveFrame(*mPropStore->getConfigOrDie(OBD2_LIVE_FRAME));
     initObd2FreezeFrame(*mPropStore->getConfigOrDie(OBD2_FREEZE_FRAME));
+    mInEmulator = isInEmulator();
+    ALOGD("mInEmulator=%s", mInEmulator ? "true" : "false");
 }
 
 std::vector<VehiclePropConfig> EmulatedVehicleHal::listProperties()  {
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
index 78895e3..367a6ec 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
@@ -86,6 +86,7 @@
     std::unordered_set<int32_t> mHvacPowerProps;
     RecurrentTimer mRecurrentTimer;
     GeneratorHub mGeneratorHub;
+    bool mInEmulator;
 };
 
 }  // impl
diff --git a/camera/common/1.0/default/Exif.cpp b/camera/common/1.0/default/Exif.cpp
index 4de05c5..413b6bb 100644
--- a/camera/common/1.0/default/Exif.cpp
+++ b/camera/common/1.0/default/Exif.cpp
@@ -632,13 +632,13 @@
 }
 
 bool ExifUtilsImpl::setImageHeight(uint32_t length) {
-    SET_LONG(EXIF_IFD_0, EXIF_TAG_IMAGE_LENGTH, length);
+    SET_SHORT(EXIF_IFD_0, EXIF_TAG_IMAGE_LENGTH, length);
     SET_LONG(EXIF_IFD_EXIF, EXIF_TAG_PIXEL_Y_DIMENSION, length);
     return true;
 }
 
 bool ExifUtilsImpl::setImageWidth(uint32_t width) {
-    SET_LONG(EXIF_IFD_0, EXIF_TAG_IMAGE_WIDTH, width);
+    SET_SHORT(EXIF_IFD_0, EXIF_TAG_IMAGE_WIDTH, width);
     SET_LONG(EXIF_IFD_EXIF, EXIF_TAG_PIXEL_X_DIMENSION, width);
     return true;
 }
diff --git a/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp b/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
index 1a80ecf..7e0237a 100644
--- a/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
+++ b/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
@@ -25,6 +25,8 @@
 #include <condition_variable>
 #include <mutex>
 
+#include <cutils/properties.h>
+
 using android::hardware::Return;
 using android::hardware::Void;
 
@@ -36,6 +38,12 @@
 using android::hardware::gnss::V1_0::IGnssMeasurement;
 using android::sp;
 
+static bool IsAutomotiveDevice() {
+  char buffer[PROPERTY_VALUE_MAX] = {0};
+  property_get("ro.hardware.type", buffer, "");
+  return strncmp(buffer, "automotive", PROPERTY_VALUE_MAX) == 0;
+}
+
 #define TIMEOUT_SEC 2  // for basic commands/responses
 
 // for command line argument on how strictly to run the test
@@ -444,9 +452,9 @@
 
   auto gnssDebug = gnss_hal_->getExtensionGnssDebug();
   ASSERT_TRUE(gnssDebug.isOk());
-  if (info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
-    sp<IGnssDebug> iGnssDebug = gnssDebug;
-    EXPECT_NE(iGnssDebug, nullptr);
+  if (!IsAutomotiveDevice() && info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
+      sp<IGnssDebug> iGnssDebug = gnssDebug;
+      EXPECT_NE(iGnssDebug, nullptr);
   }
 }
 
diff --git a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
index 7a7b6af..7c54a80 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
@@ -21,6 +21,7 @@
 #include <VtsHalHidlTargetTestBase.h>
 
 #include <android/hardware/gnss/1.1/IGnssConfiguration.h>
+#include <cutils/properties.h>
 
 using android::hardware::hidl_vec;
 
@@ -33,6 +34,12 @@
 using android::hardware::gnss::V1_1::IGnssConfiguration;
 using android::hardware::gnss::V1_1::IGnssMeasurement;
 
+static bool IsAutomotiveDevice() {
+  char buffer[PROPERTY_VALUE_MAX] = {0};
+  property_get("ro.hardware.type", buffer, "");
+  return strncmp(buffer, "automotive", PROPERTY_VALUE_MAX) == 0;
+}
+
 /*
  * SetupTeardownCreateCleanup:
  * Requests the gnss HAL then calls cleanup
@@ -488,7 +495,7 @@
 TEST_F(GnssHalTest, GnssDebugValuesSanityTest) {
     auto gnssDebug = gnss_hal_->getExtensionGnssDebug();
     ASSERT_TRUE(gnssDebug.isOk());
-    if (info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
+    if (!IsAutomotiveDevice() && info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
         sp<IGnssDebug> iGnssDebug = gnssDebug;
         EXPECT_NE(iGnssDebug, nullptr);
 
diff --git a/sensors/1.0/vts/functional/Android.bp b/sensors/1.0/vts/functional/Android.bp
index d1b8cc7..1167fd4 100644
--- a/sensors/1.0/vts/functional/Android.bp
+++ b/sensors/1.0/vts/functional/Android.bp
@@ -31,9 +31,6 @@
         "android.hardware.sensors@1.0",
         "VtsHalSensorsTargetTestUtils",
     ],
-    test_suites: [
-        "general-tests",
-        "vts"
-    ],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/sensors/2.0/vts/functional/Android.bp b/sensors/2.0/vts/functional/Android.bp
index 7755ef5..4765fa2 100644
--- a/sensors/2.0/vts/functional/Android.bp
+++ b/sensors/2.0/vts/functional/Android.bp
@@ -33,9 +33,5 @@
         "libfmq",
         "VtsHalSensorsTargetTestUtils",
     ],
-    test_suites: [
-        "general-tests",
-        "vts",
-    ],
 }
 
diff --git a/wifi/1.3/default/wifi.cpp b/wifi/1.3/default/wifi.cpp
index 2f21819..4229d35 100644
--- a/wifi/1.3/default/wifi.cpp
+++ b/wifi/1.3/default/wifi.cpp
@@ -124,6 +124,8 @@
             }
         }
         LOG(ERROR) << "Wifi HAL start failed";
+        // Clear the event callback objects since the HAL start failed.
+        event_cb_handler_.invalidate();
     }
     return wifi_status;
 }
@@ -158,6 +160,8 @@
         }
         LOG(ERROR) << "Wifi HAL stop failed";
     }
+    // Clear the event callback objects since the HAL is now stopped.
+    event_cb_handler_.invalidate();
     return wifi_status;
 }